Watson described the purpose of psychology as: âTo predict, given the stimulus, what reaction will take place; or, given the reaction, state what the situation or stimulus is that has caused the reactionâ (1930, p. 11). * All behavior is learnt from the environment.
Additional tests including penetration,solubility, and ductility are made on the residue. Cutback asphalt grades and tests There are several grades for each of the three types ofcutbacks â rapid curing (RC), medium curing (MC), andslow curing, (SC). The grades include 70, 250, 800, and3000.
Aggregate Gradation & Lift Thickness. Four different mix types are allowed SG (1â), S (3/4â), and SX (1/2â) and SX. (Fines). SG is reserved for bottom or lower lift paving in multi lift applications. Both S and Sx mixes can be used for top mat paving and both can be used in. high traffic conditions.